1 Department of Physics, Taiyuan Normal University, Jinzhong 030619, China; 2 College of Information Engineering, Shanxi Vocational University of Engineering Science and Technology, Jinzhong 030619, China; 3 Shanxi North Machinery Manufacturing Co., Ltd, Taiyuan 030000, China; 4 State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China; 5 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
Abstract A quantum teleportation network involving multiple users is essential for future quantum internet. So far, controlled quantum teleportation has been demonstrated in a three-user network. However, versatile and controlled quantum teleportation network involving more users is in demand, which satisfies different combinations of users for practical requirements. Here we propose a highly versatile and controlled teleportation network that can switch among various combinations of different users. We use a single continuous-variable six-partite Greenberger-Horne-Zeilinger (GHZ) state to realize such a task by choosing the different measurement and feedback operations. The controlled teleportation network, which includes one sub-network, two sub-networks and three sub-networks, can be realized for different application of user combinations. Furthermore, the coherent feedback control (CFC) can manipulate and improve the teleportation performance. Our approach is flexible and scalable, and would provide a versatile platform for demonstrations of complex quantum communication and quantum computing protocols.
Fund: Project supported by the Natural Science Foundation of Shanxi Province of China (Grant No. 202203021221214), the National Natural Science Foundation of China (Grant Nos. 62122044, 62135008, 61925503, 11904218, 12004276, 12147215, and 11834010), the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi Province of China (Grant Nos. 2019L0092 and 2020L0029), the Key Project of the National Key Research and Development Program of China (Grant No. 2022YFA1404500), the Program for the Innovative Talents of Higher Education Institutions of Shanxi Province of China, the Program for the Outstanding Innovative Teams of Higher Learning Institutions of Shanxi and the Fund for Shanxi “1331 Project” Key Subjects Construction.
Corresponding Authors:
Zhi-Hui Yan
E-mail: zhyan@sxu.edu.cn
Cite this article:
Yao-Yao Zhou(周瑶瑶), Peng-Xian Mei(梅鹏娴), Yan-Hong Liu(刘艳红), Liang Wu(吴量), Yan-Xiang Li(李雁翔), Zhi-Hui Yan(闫智辉), and Xiao-Jun Jia(贾晓军) Versatile and controlled quantum teleportation network 2024 Chin. Phys. B 33 034209
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